Servo motor noise from Stereo/Nav

[GarageToys]

I recently bought a '07 Tahoe LTZ with navigation. When I get in the truck (and it's quiet), I hear a weird noise from the stereo/nav unit that sounds like a little servo motor. It goes for a while and finally shuts off.

Is this normal? The truck was my brother-in-law's previously and he said it's done it since new & has never killed the battery. Anyone else notice this with their truck?

 

[turboeclips]

Mine does the same thing... I always assumed it was just normal. I wonder how many others there are?

 

[007fl]

It's the NAV system reading the DVD. Every time you start up it needs to update its position and pull as much local information from the DVD as possible.

Normal (but irritating, I admit)

 

[OMG its Jason]

and THIS is why this forum rocks!! I was about to ask the same exact question!

 

[turboeclips]

It's the NAV system reading the DVD. Every time you start up it needs to update its position and pull as much local information from the DVD as possible.

Normal (but irritating, I admit)

That could be possible.... but mine doesn't have NAV.. I have a DVD drive and a CD drive.

 

[007fl]

That could be possible.... but mine doesn't have NAV.. I have a DVD drive and a CD drive.

Okay, you had me wondering there for a minute so I went out and simulated every condition I could.
No video DVD, No NAV DVD,,,,,, No sound
Video DVD, No NAV DVD,,,,,,,,,, No sound
No video DVD, NAV DVD,,,,,,,,,,, servo sound

I don't know where your sound is coming from but mine is coming from the NAV DVD.

 

[Rebound]

That could be possible.... but mine doesn't have NAV.. I have a DVD drive and a CD drive.

Do you hear it as soon as you turn on the ignition when you truck is cold?

If not, and you hear it later, I suspect it's a cooling fan.

I don't have NAV either, and I only hear it after the truck (and radio) have been running for a while. Usually when I stop somewhere and shut off the truck, but leave the radio on.

 

[007fl]

Do you hear it as soon as you turn on the ignition when you truck is cold?

If not, and you hear it later, I suspect it's a cooling fan.

I don't have NAV either, and I only hear it after the truck (and radio) have been running for a while. Usually when I stop somewhere and shut off the truck, but leave the radio on.

Has to be a different sound than I'm hearing.
I hear it as soon as I shut the door. I don't even have to put the key in the ignition.

 

[tspear]

i Have the same things. It usually makes the sound as soon as I unlock the doors. Sounds like it is reading a disk. Definitely not a fan. I'd be curious to find out what it is as well....

 

[turboeclips]

yea... mine does it as soon as door is opened with no key in ignition yet. I took the DVD and CD that were in the drives out and the noise went away. Did get to try each one at a time to see which was was the culprit. I will do this and let yall know.


tspear Do you have NAV or just a dash with DVD and CD like mine?

 

[turboeclips]

I just did test on mine and it looks like it has something to do with the DVD drive... but I don't have NAV as 007fl does.... so his explanation doesn't justify mine spin up.

No video DVD, No CD,,,,,, No sound
Video DVD, No CD,,,,,,,,,, Servo Sound
No video DVD, CD,,,,,,,,,,, No sound
Video DVD, CD,,,,,,,,,, Servo Sound

 

[eandj23]

Sounds like a common problem because I have the same thing. I have a Nav system and i have heard it without a CD in, with a CD in, right when i get in the car, right after i turn off the car...when i first bought the car i thought a CD was jammed in there.

Hasnt caused any problem for me...actually, i take that back...it caused an irritation problem for my wife...which in turn caused an irritation problem for me!